if else with comparison >= does not work

[angelina7382]

hrs = float(input('Enter Hours:'))
rate = float(input ('Enter Rate:'))
h = float(hrs) - 40
r = float (rate) * 1.5
def computepay(h,r):
    retun ((h*r)
if hrs <= 40:
    print (hrs * rate)
else :   
    print(computepay)